(Reuters) - When Rwanda's ex-spy chief Patrick Karegeya was murdered in South Africa in 2014, his former brother-in-arms James Kabarebe was blunt: "When you choose to be a dog, you die like a dog.

"For you, it's just something you talk about... while you're playing football or tennis, or golf," Kagame told a room full of diplomats last month. "It's life and death to me and my people." ...